Coil SumoSprings® improve the load leveling ability of original equipment front and rear coil springs. Manufactured from micro-cellular urethane, the material's progressive spring rate creates a cushion effect, enhancing capacity and ride comfort. They install by simply being slid between the turns of the coil spring.
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Coil SumoSprings have been tested to increase the capacity of coil springs by 15% to 30%. This makes for better suspension; all from a simple and budget friendly product.


Whether it is added weight (snow plow, bumper, bike rack, etc.) or coil springs worn out from use and age, Coil SumoSprings will enhance your suspension to give it the boost you need.


Coil SumoSprings increase driver control by reducing sway and providing tighter handling. These increases will result in a longer life span for your brakes, tires, and more.


Coil SumoSprings are a great way to add capacity for applications such as a mini van loaded up with camping equipment, a sedan carrying a bike rack, a truck with a replacement bumper, and more.

Frequently Asked Questions

We want our website to be helpful; to answer the questions you have about our products. If this list and page do not provide you with the information you came looking for, please let us know! Call us toll-free at +1 (800) 898-0705, or send us a message.


If your vehicle is not listed in the Application Guide, we would like to recruit you for some research and development! Complete some simple measurements and we will confirm a fit for you. Once confirmed, we will add the application to our Application Guide for others to benefit from. Enter the dimensions into the form and submit.

Vehicle on wheels (loaded)

Wheels hanging (unloaded)

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